EP0182764A3 - Electromechanical film and procedure for manufacturing same - Google Patents

Electromechanical film and procedure for manufacturing same

Info

Publication number
EP0182764A3
EP0182764A3 EP85850364A EP85850364A EP0182764A3 EP 0182764 A3 EP0182764 A3 EP 0182764A3 EP 85850364 A EP85850364 A EP 85850364A EP 85850364 A EP85850364 A EP 85850364A EP 0182764 A3 EP0182764 A3 EP 0182764A3
Authority
EP
European Patent Office
Prior art keywords
film
procedure
tube
dimensions
manufacturing same
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85850364A
Other versions
EP0182764B1 (en
EP0182764A2 (en
Inventor
Kari Kirjavainen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT85850364T priority Critical patent/ATE61706T1/en
Publication of EP0182764A2 publication Critical patent/EP0182764A2/en
Publication of EP0182764A3 publication Critical patent/EP0182764A3/en
Application granted granted Critical
Publication of EP0182764B1 publication Critical patent/EP0182764B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49005—Acoustic transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Materials For Medical Uses (AREA)
  • Laminated Bodies (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Secondary Cells (AREA)
  • Prostheses (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

The present invention concerns a dielectric film for converting the energy of an electric field or of a magnetic field into mechanical work, orfor converting mechanical work into electric energy, and a procedure for manufacturing the film. The film of the invention consists of a homogeneous, e.g. a film layer (A) foamed to a structure (C) of full-cell type and which has been oriented by stretching it in two dimensions and coated at least in part on one side or on both sides with an electrically conductive layer (B). The film is manufactured by extruding the plastic which has been made to be foams able, into tubular shape, performing intermediate cooling of the tube and reheating it, expanding the heated tube in two dimensions, metallizing the outer surfaces and cutting the tube open to become a film.
EP85850364A 1984-11-20 1985-11-12 Electromechanical film and procedure for manufacturing same Expired - Lifetime EP0182764B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85850364T ATE61706T1 (en) 1984-11-20 1985-11-12 ELECTROMECHANICAL FILM AND METHOD OF PRODUCTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US673485 1984-11-20
US06/673,485 US4654546A (en) 1984-11-20 1984-11-20 Electromechanical film and procedure for manufacturing same

Publications (3)

Publication Number Publication Date
EP0182764A2 EP0182764A2 (en) 1986-05-28
EP0182764A3 true EP0182764A3 (en) 1988-09-07
EP0182764B1 EP0182764B1 (en) 1991-03-13

Family

ID=24702847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85850364A Expired - Lifetime EP0182764B1 (en) 1984-11-20 1985-11-12 Electromechanical film and procedure for manufacturing same

Country Status (7)

Country Link
US (1) US4654546A (en)
EP (1) EP0182764B1 (en)
JP (1) JPS61148044A (en)
AT (1) ATE61706T1 (en)
DE (1) DE3582121D1 (en)
DK (1) DK533685A (en)
NO (1) NO854629L (en)

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PATENT ABSTRACTS OF JAPAN, vol. 6, no. 170 (E-128)[1048], 3rd September 1982; & JP - A - 57 87188 (MATSUSHITA DENKI SANGYO K.K.) 31-05-1982 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 77 (E-106)[955], 14th May 1982; & JP - A - 57 15600 (KUREHA KAGAKU KOGYO K.K.) 26-01-1982 *
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 111 (E-246)[1548], 24th May 1984; & JP - A - 59 27584 (KOGYO GIJUTSUIN) 14-02-1984 *

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ATE61706T1 (en) 1991-03-15
DE3582121D1 (en) 1991-04-18
DK533685A (en) 1986-05-21
NO854629L (en) 1986-05-21
EP0182764B1 (en) 1991-03-13
EP0182764A2 (en) 1986-05-28
DK533685D0 (en) 1985-11-19
US4654546A (en) 1987-03-31
JPS61148044A (en) 1986-07-05

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